package com.jie.educenter.mapper;

import com.jie.educenter.entity.UcenterMember;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;

/**
 * <p>
 * 会员表 Mapper 接口
 * </p>
 *
 * @author xzj
 * @since 2020-10-15
 */
public interface UcenterMemberMapper extends BaseMapper<UcenterMember> {

    /**
     * 查询某一天注册人数
     * @param date  某一天
     * @return      返回某一天的注册人数
     */
    Integer countRegisterDay(String date);

}
